Machine for making brooms for street-sweeping machines.



PATENTED JUNE 2, 1903.

A. SOHAEFER. MACHINE FOR MAKING BROOMS PORSTREBT SWEEPING MAGHINES.

A PPLIOATION IILIIEII) OUT. 27. 1902. Y

N0 MODEL.

aubewtqv @51 aubzhm s fia/m/r mm W fig r m: mum s PETERS be FHOTO-LITHQ.WASHIMI'VON n r UNITED STATES Patented June 2, 1903.

PATENT ()FFIQE.

MACHINE FOR MAKING BROOMS FOR SIREET-SWEEPING MACHINES.

SPECIFICATION forming part of Letters Patent N 0. 729,676, dated June 2,1903.

Application filed October 27, 1902. Serial No. 128,863. (No modelfi Toall whom it may concern:

Be it known that 1, ANDREW SCHAEFER, a citizen of the United States,residing at Louisville, in the county of J efierson and State ofKentucky, have invented certain new and useful Improvements in Machinesfor'Making Brooms for Street-Sweeping Machines; and I do declare thefollowing to be a full,clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and to the letters of reference marked thereon, which form a part ofthis specifica: tion.

My invention relates to improvements in a machine for making brushes forpick up street-sweeping machines; and the object of my invention is toso construct such a machine as to make its operation more rapid andeconomical and the details of construction more convenient.

In the drawings, Figure 1 is a right-hand end elevation. Fig. 2 is arear side elevation. Fig. 3 is a front side elevation. Fig. 4 is a topplan view showing the bed of the machine partly broken away. Fig. 5 is asectional detail View showing the relative position of I the parts ofthe broom at the beginning of the operation of the machine, and Fig. 6is a simi lar View of abroom completed by the machine.

he represents the supporting-legs of the mac me.

A represents the bed of the machine, from p "each end of which projectsan arm A on which slides a drill-carriage 0, bearing drills 0 arrangedat suitable distances throughout its length from one end of the carriageto the other, the boring end of the drills directed inwardly toward thebed of the machine and the outward end of the drills carryingoperatingpulleys c c c. From the right-hand end of the carriage, asshown in Fig. 2, arms 0 descend vertically, arranged to support a maindriving-pulley for the drills, (designated by D.) Supported by armsdescending from the other'end of the carriage is an idler D for thedrill-belt d, which passes around the main driving-pulley D, then aroundthe idler D, then alternately over the pulleys c c on the ends of thedrills and corresponding idlers cc, arranged below the drill-carriage. 7

Along the length of the bed A and parallel withits longitudinal axis Iarrange metal bars B, having flanges B at suitable distances apart tohold the side braces of the broom in position. These bars are fastenedto the bed of the machine by bolts 12', passing through the flanges andthroughtransverse adj ustingslots of in the bed of the machine, wherebythe distance between the bars B can be adjusted to suit the size of thebroom.

b I) represent transverse grooves in the bars 13 to allow the passageofthe drills, and a a represent openings in bottom of the machine-bed tolet drill-dust and shavings drop through.

E rep resents the vertical pressure-bar frame,

and E the pressure-bar which works between vertical guiding-standards AV- shaped on their inner opposite sides and connected at the top by across-piece A. On the lower bar of the frame E, below the bottom of thebed, is a flange e projecting inwardly, adapted to engage dogs F,attached to the legs A of the machine by coiled springs f.

F represents the dog trip-bar, and f the connection between the trip-barF and the dog-bar f F represents lever-handle to disengage dogs.

Grepresents the main drive-pulley for pressure-frame.

G is a small pinion on shaft of main pullev.

G is a large gear on the cam-shaft.

G and G4 G represent cams.

g g are standards projecting upward from the bottom bar of thepressure-bar frame E, and g representsrollers on top of the standards gto engage the cams G The reference-letters e e indicate the longitudinalhalf-U-shaped wooden side braces of the broom; e, the longitudinalwooden center brace of the broom; e aflat iron bar laid along the,middle of thebed A to keep the bottoms of the broom sides apart, and Hthe bristles or straw formingthe -sweeping portion of the broom.

The operation of my machine may be described as follows: When a broom isto be made, the half- U -shapedside braces are placed longitudinally onthe bed A of the ICO machine parallel and opposite, the concave sidesfacing each other, their backs resting against the bars 13, and theirbottoms kept apart by the longitudinal bar e The straw H is laid acrossthe side braces e, as shown in Fig.5. The pressure-bar frame E isconnterbalanced by weights WV, attached by pulleys P to ceiling or wall,as shown in Fig. 3, the power being applied by the belt around thepulley G. The cam-shaft G is thrown over by the lever (3 till the camsengage the rollers g on top of the standards g, erected on the bottombar-of the pressure-bar frame E, whereupon the pressure-bar frameisforced down, bringing the pressure-bar E down with it till the dogs Fengage the projecting flange e on the bottom bar of the frame E and holdthe frame fast. As the pressurebar E descends it engages the centerpiece e of the broom throughout its length, forcing it down and carryingthe straw down before it, as indicated in Fig. 5. At this point it wouldbe preferable to use the lever G to disengage the cams from the rollersg. As soon as the center piece a is forced into position over the strawand between the side braces of the broom the main drive-pulley D,carrying the drill-belt d, is put in motion, causing the drills O torevolve. The drillcarriage is moved inwardly by the screwshaft marked I(shown partly broken off) by either power or hand till the drills cutthrough the side braces and center brace of the broom, when the carriageis drawn back to itsoriginal position, and the bolts to hold the sidesand center brace of the broom together are put through the holes made bythe drills and fastened by screw-taps, as shown in Fig. 6, the dust orshavings from the drills falling through the apertures a in the bottomof the bed A. The broom complete is then removed, the lever F is thrownback, disengaging the dogs from the flange c and the counterbalancedframe E rises to its original position, with the pressure-bar E pressingagainst the top piece afijoining the guide-standards A".

This machine runs by power and can be adjusted to any-sized brushor toput any desired number of bolts in a brush. The drills mounted on thedrill-carriage drill all the holes for bolts through the broom at thesame time and the drills and idlers can be adjusted to use as 1 many orfew as desired.

Having thus described my invention, what I claim, and now desire tosecure by Letters Patent of the United States, is

3. In a machine for making brooms for streetsweeping machines, thecombination with a support having means for holding in proper relativepositions the side portions of a broom-head, of a reciprocatory pressuredevice for forcing the broom-straw into position between said portionsof the head, means for raising said device and means for holding thesame in lowered position.

, 4. In a machine for making brooms for street-sweeping machines, thecombination with a frame having means for holding in proper relativepositions the side portions of a broom-head, of a counterbalancedpressure device for forcing the broom-straw into position between saidside portions of the head, and a dog and a projection to engage eachother, one of which is carried by said reciprocatory device, for holdingthe same in lowered position.

5. In a machine for making brooms for streetsweeping machines, thecombination with a frame having means for holding in proper relativepositions the side portions of a broom-head, of a counterbalancedpressure device for forcing the broom-straw into position between saidportions, a pair of springpressed dogs pivoted to said frame,projections from said pressure device to engage said dogs at one end ofsaid limit of travel of said device, means connecting said dogs witheach other and means for disengaging said dogs from said projections.

6. In a machine for making brooms for streetsweeping machines, thecombination with a support having means for holding in proper relativepositions the side portions of a broom-head, of a shaft provided withcams,

a frame having a means for forcing the broomstraw into position betweensaid portions of the head, projections from said frame to be engaged bysaid cams, and means for rotating said shaft.

7. In a machine for making brooms for street-sweeping machines, thecombination with a frame having means for holding in proper relativepositions the side portions of the broom-head, of a counterbalancedframe provided with a pressure-bar for forcing the broom-straw intoposition between said side portions, means for holding said frame at oneextremity of its movement against the action of its counterbalancingmeans, and means for releasing said frame from said hold ing means.

S. In a machine for making brooms for street-sweeping machines, thecombination with a frame having means for holding in proper relativepositions the side portions of a broom-head, of a counterbalancedreciprocatory frame having a pressure-bar for forcing the broom-strawinto position between said side portions, means for holding said frameat one extremity of its movement against the action of itscounterbalancing means, and means for releasing said frame from saidholding means, a shaft, means for operating said shaft and meansoperated by said shaft for moving said reciprocatory frame in onedirection.

9. In a machine for making brooms for street-sweeping machines, thecombination with a frame having means for holding in proper relativepositions the side portions of a broom-head, of a counterbalancedreciprocatory frame having a pressure-bar for forcing the strawintoposition between said side portions, means for holding said frame at oneextremity of its movement against the action of its counterbalancingmeans, a longitudinally adjustable and axially movable shaft, means forshifting the same longitudinally, a cam thereon, a projection from saidcounterbalanced frame to be engaged by said cam, and means for rotatingsaid shaft.

10. In a machine for making brooms for street-sweeping machines, thecombination with a support having means for holding in proper relativepositions the side portions of a broom-head, of a counterbalancedpressure device for forcing the broom-straw into position between saidside portions, means for holding said device against the action of itscounterbalancing means, and means for drilling holes in the sideportions of the broomhead while said pressure device is holding thestraw in place between the same.

11. In a machine for making brooms for street-sweeping machines, thecombination with a suitably-supported bed bearing on its surface twoparallel bars with an interval between them, of a quadrangular,verticallyarranged counterbalanced frame, having a top bar adapted tofit in the interval between the bed-bars, working between guide-standards projecting upward from the bed, side bars outside theguide-standards a bottom bar with an inwardly-projecting flange andstandards having rollers at the top projecting upward near each end, ashaft journaled in the legs of the machine-bed bearing cams adapted toengage the rollers on the projecting standards of the bottom bar of theframe E and force the frame downward, dogs attached to the legs of themachine-bed adapted to engage the flange on the bottom bar, means foractuating the cam-shaft and means for disengaging the cams and dogs,substantially as described and for the purposes specified.

In testimony whereof I after my signature in presence of two witnesses.

' ANDREW SCHAEFER. Witnesses:

J. J. HYMER, M. L. FORWOOD.

